Step-by-step explanation:
a. Pythagoras formula stated above
so 9²+12²
81+144 is 225
√252 is 15cm
b. in this question well have to use surds
an isosceles triangle had a 90 and 2x45 degree angles
we hypotenuse is 10cm
√a²+a² =10cm
√2a² is 10cm which makes
a√2 equals 10
then rearrange
a=10/√2= 5√2
the answer is 5√2
Answer: B)
Explanation: when rotating a point a 90 degree counter clockwise origin a(x,y) becomes a’(-y,x) meaning you switch the x and y and make the y negative
I also posted this answer on your previous question
Answer:
125
Step-by-step explanation:
The chemical structure includes the bonding angle, the type of bonds, the size of the molecule, and the interactions between molecules. Slight changes in the chemical structure can drastically affect the properties of the compound.
